8 papers
High-order perturbative calculations of nuclear ground states: Automated evaluation of many-body diagrams
Zhen Li, Alexander Tichai, Achim Schwenk +1
We advance the many-body perturbation theory (MBPT) calculations of the ground-state energy and radius of closed-shell nuclei beyond third order. Using automated diagram generation…
Exploring quark mass dependent three-nucleon forces in medium-mass nuclei
Urban Vernik, Kai Hebeler, Achim Schwenk
Recently, new quark mass dependent three-nucleon (3N) forces have been identified, whose contributions in nuclear matter exceed expectations of Weinberg power-counting arguments. I…
Bayesian approach for many-body uncertainties in nuclear structure: Many-body perturbation theory for finite nuclei
Isak Svensson, Alexander Tichai, Kai Hebeler +1
A comprehensive assessment of theoretical uncertainties defines an important frontier in nuclear structure research. Ideally, theory predictions include uncertainty estimates that…
Equation of state and Fermi liquid properties of dense matter based on chiral effective field theory interactions
Faruk Alp, Yannick Dietz, Kai Hebeler +1
We present results for the equation of state of symmetric nuclear matter and pure neutron matter obtained in many-body-perturbation theory (MBPT) up to third order, based on variou…
Quantum Monte Carlo Calculations of Light Nuclei with Fully Propagated Theoretical Uncertainties
Ryan Curry, Kai Hebeler, Stefano Gandolfi +4
We report on the first quantum Monte Carlo calculations of helium isotopes with fully propagated theoretical uncertainties from the interaction to the many-body observables. To ach…
Hartree-Fock emulators for nuclei: Application to charge radii of Ca
Margarida Companys Franzke, Alexander Tichai, Kai Hebeler +1
Understanding the emergence of complex structures of nuclei from chiral effective field theory (EFT) is a central challenge. The large number of low-energy couplings (LECs) in the…